Usb 20 stick cap stored on usb flash drive in use memory size 16 gb backward compatible with usb 11 memory type flash memory dimensions 70 x 23 x 9 96 mm materials aluminum plastic series integral xpression drive special feature splash proof manufacturers warranty 2 years additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 linux 26 mac os 9 mac os 10 windows 7 windows 8 windows vista wi